How to open a Unisys case

[kitty28]

ok, I know this sounds silly, and I hope I posted in the correct forum. I have an older Unisys MPI 4253 which I need to open up. I have tried and no success. The front seems to be screw to the cover, with no access to the screws. It does not slide off. It has groves on the side which catches it and does not allow it to slide off. There are no screws or levers to work it. Anyone have any ideas on correctly opening this case? Thanks so much!!!

 

[kitty28]

Anyone have any ideas??

 

[kitty28]

I got it, as silly as it did sound. I called Unisys and I ended up having to take out about 12 screws out of the back, which kinda held stuff in like the power supply and stuff like that. Strange, but that is how I got the cover off. Never had to do one like that. Thanks!